The Outsider

Former USMC Captain and the lone non-Japanese inmate who earns the Shiromatsu's trust after saving Kiyoshi. He becomes a fierce enforcer within the clan, drawn into brutal feuds and moral conflicts in postwar Osaka. His love for Miyu and his ascent to the head of the Shiromatsu test his loyalties and morality to the limit.

Senior Shiromatsu yakuza and ally to Nick, a protective and respected figure who guides Nick through the clan’s code. He entrusts Nick with responsibilities and demonstrates a mix of ruthless pragmatism and quiet mentorship. His death during the escape marks a pivotal blow to the clan and Nick’s path.

Kiyoshi's sister, Nick's lover, and a catalyst for the conflict. She is central to Nick's protection of the Shiromatsu and becomes pregnant, raising stakes for both families. Her presence anchors Nick’s loyalty and personal stakes within the clan war.

American businessman who distrusts the Shiromatsu and seeks to broker a deal with another clan. His attempts to negotiate are interrupted by Nick, illustrating the fragile diplomacy in postwar yakuza politics.

US Marine Lieutenant on leave and Nick's former captain who attempts to blackmail him. His murder marks the brutal reach of Nick's world and the collapse of one-time loyalties.

Miyu's former lover within the Shiromatsu who betrays the clan and defects to the Seizu. His duplicity heightens the clan war and intensifies Nick's drive for vengeance.

Aging head of the Shiromatsu who resists change and seeks to preserve the clan's honor and power amid rising external pressures. His leadership is challenged as internal betrayal and external threats mount.

Head of the rival Seizu clan, who resists Shiromatsu dominance and seeks to absorb or annihilate the rival faction to cement his clan's power.